Patent US2860199A successfully refreshed from Google Patents.
US2860199A
Expired / Lapsed
US
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Data playback unit and circuit
Assignee: Northrop Grumman Corp
•
Filing: 1953-11-09
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Granted: 1958-11-11
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Expires: 1973-11-09
Abstract
No abstract record available.
Inventors
- 👤 Richard D James
- 👤 Walter A Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:39
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/18; G06K13/26; G06K13/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2304913A
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US2352077A
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US2448026A
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US2620389A
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US2664251A
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US2575052A
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US2705599A
Cited
US2682581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |